# 【latex学习笔记】Array命令（The Latex Array Command）及实例

2012-11-26 09:27 阅读 10,803 次 评论关闭

The Latex Array Command

 Syntax \begin{array}{c1 ... cn} A(1,1) & ... & A(1,n) \\ ... & ... & ... \\ A(m,1) & ... & A(m,n) \end{array} See Also table

XML dependently interpret the array A with j-th column is aligned according to the value of cj where l means align to the left, c means align each to the center, and r means align to the right.

Example
The input

\begin{array}{clcr}

a+b++c & uv    & x-y & 27     \\

a+b    & u+v   & z   & 134    \\

a      & 3u+vw & xyz & 2,978

\end{array}

Row Alignment
The first line in the syntax above can have the form
\begin{array}[r]{c1 ... cn}
In this case the value of r specifies how each row is aligned where t means align the top, c means align the center, and b means align the bottom. For example, the input

\begin{array}[t]{cc}

\begin{array}{c} a \\ b \end{array}

&

\begin{array}{cc} a & b \end{array}

\end{array}

array有时候可能不如align，如：

\left\{
\begin{array}{c}
x + y = z,  \\
c+1 + 2 = 3.  \\
\end{array}
\right.

\left\{
\begin{aligned}
x + y &= z,  \\
c+1 + 2 &= 3.  \\
\end{aligned}
\right.